Blechnum filiforme or Icarus filiformis or pānako or thread fern is the most common, but unusual ground fern in the Tawa reserves. Its unusual features are that it is the only climbing species of Blechnum in New Zealand and it has three different types of fronds – juvenile, adult sterile and adult fertile. Blechnum speciesContinue reading “Know the native trees in Tawa reserves with Gil Roper – Thread fern – pānako”